Luke Bryan and Cole Swindell's pre-show ritual. The country crooners joked with ET that they gave each other a hand getting dressed for the occasion. "We saw each other in our underwear, because we were changing together to get our outfit picked out," Bryan said. "It's been a long time since I've seen Cole in his underwear."

Lady Antebellum's pre-show freakout. This was the country trio's first time hosting the show, and they were understandably a little self-conscious about it. "Please don't judge us if we mess up," Dave Haywood told ET. Meanwhile, Hillary Scott was especially concerned about living up to last year's hosts. "We have Luke Bryan and Dierks Bentley in the front row," she said. "I'm going to tell them beforehand, 'Don't judge!'"

Keith Urban reflecting on his tribute to Glen Campbell, who is suffering from Alzheimer's. Urban, along with Blake Shelton, Toby Keith and Dierks Bentley, performed a medley of the country icon's hits. "It was awesome getting to sing those songs with those guys," Urban said.

Watch the video below for a look at Campbell's touching documentary, Glen Campbell: I'll Be Me, covering his diagnosis.